There have been many regional conflicts in North America.

Canada:
Here is a list of Canadian battles.
http://en.wikipedia.org/wiki/List_of_conflicts_in_Canada

America: The United States suffered from one of the greatest regional conflicts of all time, it's own Civil War. This was the bloodiest battle that The United States ever saw.

Mexico:
- mexico’s entrenched political system is used to create a “system-wide network of corruption that has ensured distribution rights, market access, and even official government protection for drug traffickers in exchange for lucrative bribes”